aviation experts say lithium ion cells on boeing 787 dream liner jets could be a fire hazard if their design is flawed. after a series of technical problems, the federal aviation administration requested airlines to ground all 787s. six experts were testifying at a hearing in washington on thursday. the board is investigating how fires on two dreamliner jets earlier their year were caused and could have been prevented. some expert the pointed out that overheated lithium ion cells could catch fire because they include flammable materials. the board plans to proceed with its investigation based on the six experts' opinions. >>>? january, a smoking battery forced a 787 jet operated by nippon airways to make a landing. another 787 operated by japan's airlines was landed in an emergency landing in new york. >>> millions of owners of japanese autos around the world are being asked to have their cars checked or repaired. toyota, honda and other auto makers are recalling 41 models due to faulty air bags. the car makers filed a recall report with japan's recall men industry for about 730,000 u